My 243 Striker is not braked and I have to move my head back about 6" total from the scope to be in the safe zone. The FOV closes in to about half of the tube diameter. At first it's a little confusing and dificult to do. Practice makes perminant.

When I'm hunting charlies I carry the scope on 8 or 10X. When I spot a charlie I will get set up and find the charlie with full field of view, then dial the power up to 20. Draw my head back and squeeze the trigger. Total time from seeing the charlie to firing the gun is less than 10 seconds.